396699399 has 12 divisors (see below), whose sum is σ = 573183000. Its totient is φ = 264386544.

The previous prime is 396699349. The next prime is 396699419. The reversal of 396699399 is 993996693.

It is not a de Polignac number, because 396699399 - 2⁸ = 396699143 is a prime.

It is a super-2 number, since 2×396699399² = 314740826333922402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396699319) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54052 + ... + 60950.

It is an arithmetic number, because the mean of its divisors is an integer number (47765250).

Almost surely, 2^396699399 is an apocalyptic number.

396699399 is a deficient number, since it is larger than the sum of its proper divisors (176483601).

396699399 is a wasteful number, since it uses less digits than its factorization.

396699399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13294 (or 13291 counting only the distinct ones).

The product of its digits is 19131876, while the sum is 63.

The square root of 396699399 is about 19917.3140508453. The cubic root of 396699399 is about 734.7741135651.

The spelling of 396699399 in words is "three hundred ninety-six million, six hundred ninety-nine thousand, three hundred ninety-nine".